قمنا في هذا البحث بإدخال خوارزمية اختيار السمات المستندة على الضبط
regularization للاستفادة من خصائص الخلخلة و تجميع السمات و ادراجه في مهمة تصنيف الصور الطبية، باستخدام الطريقة المعتمدة على خلخلة المجموعة group sparsity
التي تُمكن من الإبقاء أو الحذف على مجموعة كاملة من السمات. إن الفكرة الأساسية في خلخلة المجموعة هي حذف السمات التي لا تؤثر على عملية الاستعادة بدلاً من الإبقاء على هذه السمات و اعطائها أوزان قليلة، و بالتالي تعتبر كخوارزمية لتحسين النظام عن طريق زيادة دقة النتائج بالإضافة الى تخفيض المتطلبات الزمنية و التخزينية التي يحتاجها النظام.
In this research we introduce
a regularization based feature selection algorithm to benefit from
sparsity and feature grouping properties and incorporate it into the
medical image classification task. Using this group sparsity (GS)
method, the whole group of features are either selected or removed.
The basic idea in GS is to delete features that do not affect the
retrieval process, instead of keeping them and giving these features
small weights. Therefore, GS improves system by increasing
accuracy of the results, plus reducing space and time requirements
needed by the system.
References used
Lehmann, Thomas M., et al., et al. Automatic categorization of medical images for content-based retrieval and data mining. s.l. : Computerized Medical Imaging and Graphics, 2005
Kohnen, Michael, et al., et al. Quality of DICOM header information for image categorization. 2002
Zhang, Shaoting, et al., et al. Automatic Image Annotation and Retrieval Using Group Sparsity. s.l. : IEEE, 2012
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